[NumPy-Tickets] [NumPy] #2084: Issue with concatenating structured arrays

NumPy Trac numpy-tickets@scipy....
Mon Sep 24 11:59:49 CDT 2012

#2084: Issue with concatenating structured arrays
 Reporter:  robitaille  |       Owner:  somebody   
     Type:  defect      |      Status:  new        
 Priority:  normal      |   Milestone:  Unscheduled
Component:  numpy.core  |     Version:  1.6.1      
 Keywords:              |  
Changes (by lcampagn):

 * cc: lcampagn@… (added)
  * component:  Other => numpy.core


 I can confirm this bug and reproduce the segmentation fault:

 >>> import numpy as np
 >>> a = np.empty(1, dtype=[('x', object)])
 >>> b = np.empty(1, dtype=[('x', float)])
 >>> np.concatenate([a,b])
 Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
 TypeError: invalid type promotion
 >>> np.concatenate([a,b])
 Segmentation fault (core dumped)

 I've run into this crash in a few different instances.
 I can cause this crash in both Linux (1.6.1-6ubuntu1) and on Windows.
 I have not been able to generate useful stack traces--it would appear this
 bug causes some stack corruption.

Ticket URL: <http://projects.scipy.org/numpy/ticket/2084#comment:1>
NumPy <http://projects.scipy.org/numpy>
My example project

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